Improvement in manufacture of flour



O. S. MARPLE.

Manufacture of Flour.

Patented Feb. 26,1878.

junior N.PETEHS, PHOTO-LITHOGRAFHER. WASHINGTON. D C.

UNITED STATES 1 E E ll CHRISTIAN S. ivIARPLii; 0F cHIcAeo, ILLINOIS.

;-| MYPR'OVEM ENT N YMANUAVFACTU RE- OF .Fpou R.

Specification forming part of Letters Patent No. 200,62l, dated February 26, 1878; application filed October 11, 1877'.

To all whom it may concern: V

Be it known that I; CHRISTIAN S. MARPLE, of Ohicago in the county of Cook and State of Illinois, have invented'certain new and useful Improvements in Bolting Flour; and I do hereby declare the following to be afull, clear,

and exact description thereof, which will enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawing, forming part of this specification, in which Figure 1 represents an end elevation of a flour-bolt embodying my said invention. Fig. 2 represents a transverse sectional elevation of the same. Fig. 3 represents a side elevation of the same, with the front wall. of the bo1ting-chest and the fan-case removed. Fig. 4 represents an enlarged front view of the airdistributer, and Fig. 5 represents a transverse section of the same.

Like letters of reference indicate like parts.

The object of my invention is to provide a means of regulating the temperature of the air within the bolting-chest, and at the same time causing a series of currents or jets of heated air to pass against and through the bolting-cloth, whereby the fine impurities, which would adhere to the cloth or pass through the meshes thereof with the flour, are caused to adhere to each other, so as to pass oflLwith the offal, and thereby produce a more free action of the bolt and a more uniform and better grade of flour.

To that end my invention consists in the arrangement of the mechanism and in the process, as hereinafter more fully described and claimed.

In the drawing, A represents the boltingchest, and A the bolting-reel, which is made in the usual form and journaled at its ends to the end walls of the chest, so as to freely revolve. 0 represents a hot-air chamber, which is located at a point near the bolting-chest, and is provided internally with a' series of coiled steam-pipes, G, which communicate with a steam-boiler, or with other suitable.

steam-generator. (Not shown.) D represents an ordinary blast-fan case, which is located at a point near the bolting-chest, and is provided with fans which receive their motion Y from any suitable motor. I) is an ordinary suction-pipe, whichcommunicat'es atoneend -witli the hot-air chamber G,and at the oppo site end with the fan-case D." This'pipe is attached to the'edge of the'fancase oppositeto the exhaust-opening, and extends along'the 7 side of the case to the center thereof, as shown in Fig. 1, and communicates with the interior of the case in the usual manner.

E is the air-distributer, which is arranged longitudinally withinthe bolting-chest in close proximity to the bolting-reel, and in a plane parallel therewith, and extends the entire length of the reel, and is provided with a series of exit air-openings, a, formed through the side wall thereof adjacent to the bolting-reel, as shown in Figs. 2 and 5.

F is a blast-pipe, which communicates at one end with the fan-case, and at the opposite end with the air-distributer E. This air-dis tributer E is provided at its end opposite tothe pipe F with an escape-opening, d, over which is fitted a slide, d, which is so arranged as to admit of being moved in the direction of its length to open or close the opening 01, the object of which is to allow the deposit of material which may be accumulated within the distributer to be forced therefrom through the said opening by the air-current from the pipe F.

\ The arrangement of said parts is such that as motion is imparted to the fair the air is drawn into the-airchamber 0 through a series of inlets, f, and is heated by the radiation of heat from the coil 0, when it is drawn through the pipe D into the fan-case D, and forced through the pipe F into the air-distributer E, from whence it escapes in fine jets through the openings at against and through the bolting-cloth on the reel A.

The temperature of the air within the airchamber may be regulated, so as to produce a regular and uniform temperature of the air in the bolting-chest, by increasing or diminishing the amount of steampassin g throughthe coil 0.

It is a well-established fact that it is more difficult to produce a good grade of flour in cold damp weather than in warm dry weather, the difficulty arising from the effect of the atmosphere upon the meal during the process of bolting. If cold and damp, the glutinous matter and fine fibrous impurities within the meal will adhere to the bolting-cloth, so as topartly fill the meshes thereof, when the weight of the meal within the bolt will force the glutinous matter and fine fibrous impurities from and through the meshes of the bolting-cloth, so as to cause them to mingle with the. flour.

With my invention this difficulty is entirely overcome, for the jets of heated air are discharged against the outer surface of the bolting-reel, producing a uniform degree of heat within the bolting chest and reel, and so as to absorb the moisture in the glutinous matter,

What I do claim as new, and desire to secure by Letters Patent, is.

1. The combination, with the bolting-reel, of the air-distributer E, pipes D and F, the fan and hot-air chamber 0, substantially as and for the purpose specified.

2. The process herein described of regulating the temperature of the air within the bolting-chest, and preventing the glutinous matter and finefibrous impurities from adhering to the bolting-cloth, by introducing jets or currents of heated air into the bolting-chest, and in direct contact with and against the outer surface of the bolting-cloth and through the meshes thereof, substantially as specified.

The above specification of my invention signed by me this 6th day of October, 1877.

CHRISTIAN s. MARPLE.

Witnesses N. H. SHERBU'RNE, G. R. HOFFMAN, 

